Percent CD4 T cells in axillary LNs at 6 and 10 weeks and 5 to 6 months after transplantation.

Percents of total lymph node cells (100%) are shown. The animals were treated with IL-7 (filled symbols) or placebo (open symbols) between 6 and 10 weeks after transplantation, as indicated by the horizontal black bar. In one placebo-treated animal, LN sampling at 5 to 6 months after transplantation was not done.